Report on Crassispirinae Morrison, 1966 (Mollusca: Neogastropoda: Turridae) from the China Seas

The present paper reports 32 turrid species from the China Seas, belonging to eight genera of the subfamily Crassispirinae of the family Turridae. Four new species are described: Funa cretea sp. nov., Inquisitor plurivaricis sp. nov., Inquisitor vividus sp. nov. and Ptychobela resticula sp. nov. Eight species are recorded for the first time from the China Seas.     

New taxa of the family Trochometridiidae (Acari: Heterostigmata) associated with insects from Iran

A new genus and two new species of mites of the family Trochometridiidae (Acari: Heterostigmata) are described from Iran: Neotrochometridium sensillum Hajiqanbar and Khaustov gen. nov., sp. nov. associated with two carabid beetles and Trochometridium iranicum Hajiqanbar and Khaustov sp. nov. associated with a halictid bee. We also present the first report of two previously described species. These findings provide the first record of the family Trochometridiidae from Iran. The chaetotaxy of tarsus I of the family is discussed and a key to world genera and species is provided.     

A new species of Cerchysiella (Hymenoptera: Encyrtidae) parasitic in larva of chestnut trunk borer (Coleoptera: Cerambycidae) from China with notes on its biology

A new species of Cerchysiella Girault (Hymenoptera: Chalcidoidea, Encyrtidae), Cerchysiella raddeii Yang, sp. nov., is described from China. It is a gregarious koinobiont endoparasitoid in mature larvae of the chestnut trunk borer, Massicus raddei (Blessig) (Coleoptera: Cerambycidae), a serious pest which causes severe damage to many oak tree species, particularly Quercus mongolica and Quercus liaotungensis (Fagaceae) in forested areas of northeastern China. The new species is one of the principal natural enemies of the wood borer and it has high potential as a biological control agent with parasitism rates of 6.7%, large numbers of adult wasps were reared from a single host larva (average 1083.8), and there is a high female : male sex ratio (9.67 : 1).     

The ontogeny description of two Neotropical species of Crotonia (Acari: Oribatida: Crotonioidea)

A remarkable new species of black fungus gnat Pnyxiopalpus roslii sp. nov., was discovered from nests of the termite Nasutitermes proatripennis in Ulu Gombak, Malaysia, and is described based on the female morphology and DNA barcodes. This is the first record of a termitophilous black fungus gnat from South-east Asia. The new species is easily distinguished from its known congeners by the degeneration of all thoracic setae into tiny setulae. This species is described as a symbiont of the host termite based on field observations and the examination of specimens. The “wing stump” structure of the new species indicates that this species has wings after eclosion and later loses them, an adaptation to a cryptic life. A second still undescribed termitophilous species of Pnyxiopalpus was observed walking in a marching column of the termite Longipeditermes longipes in Ulu Gombak.     

Four new species of the Diphascon nobilei group (Eutardigrada,Hypsibiidae)

The existence of a group of species similar to Diphascon (Diphascon) nobilei is shown. These species have some common characteristics: a well‐evident drop‐shaped thickening between the buccal tube and the pharyngeal tube, pharyngeal bulb, more or less elongate, with three rod‐shaped macroplacoids and microplacoid, claws of the hind legs different from those of the first three pairs of legs in having a very wide basal portion and indented basal margin, basal spurs also present on the external claws and, in some cases, also on the internal claws of the first three pairs of legs. Four new species of this group are described: Diphascon (D.) serratum, D. (D.) nelsonae, D. (D.) platyungue, and D. (D.) hydrophilum. They differ from one another in the dimensions and shape of the claws; in some cases the difference also affects the value of the ptd index relative to the insertion point of the stylet supports, the buccal and the pharyngeal tube length or the macroplacoid length.     

A new species of marine nemertean from Anglesey,North Wales,with a discussion of the genus Paroerstedia Friedrich, 1955

A new species of marine nemertean, Paroerstedia nigrimaculata sp. nov., is described and illustrated from a single specimen found among Corallina in a lower shore rock pool at Rhosneigr, Anglesey, North Wales. No Paroerstedia species has been recorded previously from the British Isles. The systematics of the genus and its contained species are discussed.     

培养基成分对海洋假单胞菌7-11产蛋白酶的影响

对海洋假单胞菌7-11(pseudomonas sp.7-11)产蛋白酶进行了培养基的优化,初步确定了促使蛋白酶产率提高的培养基的配方.经过26℃、140r/min、12 h培养,蛋白酶的相对产量可达201.7 IU/mL,比培养基优化前的26.8 IU/mL提高了646%.     

On a new and puzzling American rotifer (Rotifera: Monogononta,Lecanidae)

A new species of monogonont rotifer, Lecane difficilis n.sp., is described from French Guyana. The taxon also occurs in Brazil and North Carolina, USA, following reassessment of illustrated literature records. The superficial similarity of L. difficilis with the Old World tropical L. unguitata (Fadeew) may account for some non-verifiable records of the latter from the New world.     

TCNQ修饰的金/18硫醇-卵磷脂双层膜在Fe(CN)_6~(3-/4-)溶液中的单向导电性

固体支撑的双层类脂膜不仅是研究和模拟发生在生物膜上各种过程的重要模型，而且也成为研制生物分子电子器件的重要工具．在固体支撑的双层类脂膜中，金／硫醇－类脂双层膜以其缺陷少、稳定性高等特性而倍受关注［１］．本文报道了修饰７，７，８，８－四氰基奎诺二甲烷（...     

Evolutionary relationship amongBothriocephalus parasitized in grass carpCtenopharyngodon idellus (C. et V.), common carpCytpinus carpio L. and Ma Kou YuOpariichthys bidens Günther in China

RAPD was used to analyze the polymorphism ofBothriocephalus parasitic in grass carp and common carp from Guangdong, Fujian and Gansu and in Ma Kou Yu from Fujian. Though there exist differences in geographical distribution and host specificity betweenBothriocephulus parasitic in grass carp and common carp, RAPD analysis shows high similarity (72.3%–96.3%) in DNA between them, whereas betweenBothriocephalus parasitic in Ma Kou Yu and in grass carp and common carp low similarity (24%-28.2%) was noticed. Hence,Bothriocephalus parasitic in Ma Kou Yu andBothriocephalus parasitic in grass carp and common carp should be regarded as separate species.